As editors at Allure, we're constantly asked about our lengthy skin-care routines and the makeup we wear every day, so we got a group of staffers to detail each step in their extensive daytime product lineups.

As a dermatologist and a former Allure editor, I am wildly fickle when it comes to skin-care products. I dabble and stray with the latest creams and potions, and I work hard to stay informed for my patients. But there's one area where I'm utterly faithful to my routine: sun protection. Here's what I do.